As control elements, a proportional valve working at low friction guarantees the high sensitivity and good control characteristics of these units.

The measured value provided by the sensor will be compared in the digital control electronics with the predefined set point according to the signal; if a control difference is present, the control value output to the proportional valve will be modified using a PI-control algorithm. In this way, the flow can be maintained at a fixed value or a predefined profile can be followed, regardless of pressure changes or other disturbances in the system.

The following are some of the features of the LFC Liquid Flow Controllers:

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